Silver diffusion in commercial QE22 magnesium alloy with Saffil fiber reinforcement

Influence of silver addition on the microstructure and mechanical properties of squeeze cast Mg–6Al–1Sn–0.3Mn–0.3Ti

“…Generally, the mechanical properties of the alloys can improve via solid solution strengthening or/and precipitation strengthening. Besides the size, shape, quantity and distribution of secondary phases can influence the mechanical properties of the alloy [4,8,13,20]. In this study, the improvement of the tensile strength of the alloy 1 mainly comes from the solid solution strengthening of ␣-Mg, Mg 17 Al 12 with silver and existing ␣-Ti and Al 81 Mn 19 intermetallic phases.…”

“…Nevertheless, it is well known that Al containing Mg alloys include the ␤-Mg 17 Al 12 compound that deleteriously influences the mechanical properties such as tensile strength and impact resistance. The third alloying element such as strontium (Sr), calcium (Ca), tin (Sn), silver (Ag) and rare earth elements is essential for improving the mechanical properties by removing the detrimental effect of the ␤-Mg 17 Al 12 compound in magnesium-aluminum based alloys [4][5][6][7][8][9][10][11][12][13][14][15]. Silver with rare earth elements is the most effective alloying element for such proposes which result in significant improvement.…”

“…Silver with rare earth elements is the most effective alloying element for such proposes which result in significant improvement. However, the high cost of these alloys compared with conventional magnesium alloys has limited their applications [13][14][15]. Sn and Ti are relatively inexpensive alloying elements.…”

Annealing Effects in Mg-Y-Zn Alloys Prepared by Powder Metallurgy and by Squeeze Casting

“…The values of the activation energy were determined as (86 ± 7) kJ/mol for the enrichment of stacking faults by solutes in the cast alloy, (171 ± 34) kJ/mol for formation of the LPSO regions in the cast alloy and (179 ± 19) kJ/mol for grain boundary particles development in both alloys. The activation energy of the enrichment of stacking faults by solutes is lower than the activation energy of diffusion of Zn in Mg (120 kJ/mol [19]) or of diffusion of Y in Mg (170 kJ/mol determined as diffusion energy of Y in MgNdAg -QE22 alloy [20]) but one can suppose that by chemical interactions the segregation of solute atoms to stacking faults is forced by differences in solubility in and outside the stacking faults. Activation energy of the second and the third process are of the same value within deviation and agree well with the diffusion energy of Y in the QE22 alloy.…”

Effect of Modification on the Structure and Properties of QE22 and RZ5 Magnesium Alloys

“…QE22 casting magnesium alloy with rare earth elements guarantee high mechanical properties up to 200˚C [1,2]. It is caused by silver addition, which strongly increase response to age hardening [3,4].…”